Turbine-wicket-gate mounting



.May 7, 1929.

D. C. DE VINE Filed April 10, 1922 TURBINE WICKET GATE MOUNTING Sheets-Sheet l May 7, 1929. D, C, DE VINE 1,712,332

TURBINE WICKET GATE MOUNTING Filed April 10, lSZ?, 3 Sheets-Sheet 2 Lgf/'9.2,

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May y7, 1929. D. c. DE VINE TURBNE WICKET GATE MOUNTING Filed April l0, 1922 3 Sheets-Sheet 3 @WA/dw awww.,

Patented May 7, 1929.

UNITED` STATES PATENT oFFLCE.

`DANIEL C. DE VINE, OLE' YORK, PENNSYLVANIA, ASSIGNOR T0 MORGAN SMITH COME'ANY, OF YORK, PENNSYLVANIA,

' 'nonnina-Wiener- Applicationled April `10,

`thelubrication is furnished by the water which operates the turbine. Consequently, these bearings are more or less rapidly Worn, and when the water conta-ins sand, grit or acid, the wear deterioration is very much more rapid. Furthermore, in the usual type oi" gate mounting, or wherein the Vgate swings on a gate pin, it sometimes happens that the engaged portions ot the gate and gate pin become corroded to such a degree that the two parts are caused to adhere to such an eitent that when the gate is adjusted or given an angular movement, it will at the same time move the pin to an equal angular degree, and this continual movenient et' the pin in the openings orholes therefor in the top and bottom plates will cause the pin to Work loose andproduce lost motion in the operation ot the gate. `Likewise.. the wear of the pin in the openings` therefor .inl theV top and bot-toml plates will gradually increase tliesize of said openings and the gateswvill have a tendency to become loose, and lost motion` thereotincreases toa large extent, thereby permitting lealiage through the gates when the turbine is in shut down position, or when the gates are closed. rThis leakage is not only detrimental from the standpoint ot' wasting water, but very frequently becomes serious enough, or

`the water may `leak through `in suoli quantities, as to operate the turbine runner at a more or less rapid speed when the gates" are in` closed position, with obvious material disadvantage-s, in View of the tact that under these leaking conditions the runner ot the turbine cannot bestopped in its movement. Moreover, turbines having the usual torni of wicket gate with a pin extending therethrough `tor mounting the same in the top and bottoni plates do not fully providetor A CORPORATION or PENNSYLVANIA.

GATE. MOUNTING.

i922. serial No. 551,243.

the necessarystrength, for the reason that when the gates are closed, partly open, or entirely open, they are subject to a greater water pressure at t-he outside than at the inside, and as a consequence, there is a tend ency to shear off each pin at the top `and bottom portions oi the gate. y

To overcome the disadvantages of the usual form ot gate pin mounting for wicket gates, is the object of the present invention., and in theiinproved structure the body of the gate at both the top and bottom is extended to form trunnions, which provide bearingmeans of materially greater sectional area than the ordinary gate pin, or, in other words, the improved bearing is very much larger than the usualv pin type of bearing.` A further advantage of the iinproved bearing is that the wearing disadvantages and corrosion of the gate and pins y of the ordinary wicket gate bearing mount ing are fully overcome, and a materially stronger and more durable wicket gate assemblage is provided, in view of the fact thatthere is no possibility of the improved bearing devices wearing openings in the parts provided therefor, with the result that the gates are uniformly held in true working position at all times and Without the least lost motion. `Moreover, the improved wicket gate mounting will furnish a more effective and advantageous support for the top plate, in view of the tact that the pin used in the improved bearing has but one function 'to perform, namely,` to support the top plate, andis relieved olf all direct stress of the wicket gate ;V while in the ordinary forni of gate pin mounting, the pin not only has to support the top plate but also acts as a supportand bearing for the gate.

The invention in the present instance consists in the `preferred construct-ion and arrangement oi the several parts which Will be more fully hereinafter described and claimed.

`In the drawings: y

Fig. 1 is a transverse vertical section through the upper portion of a turbine and particularly showing the` runner and gates with the gates broken away to illustrate more clearly the improved bearing andmode of assembling the gates with the top and bottom plates Fig. 2 is a transverse vertical sectionoii an` enlarged scale with the gate broken away fao 2i-Sv mayv be desired.

and showing the improved gate mounting together with the lubricating means therefor' Fig 3 is aidetail transverse section on an Qmoiint'ed thereon disposed inV a casing 7,

which will have 4the usual accessories in a complete structure and provided with lower and upper plates 8 and 9 vbetween which the gatesV 10.are adjustably mounted and oper- -atedgb'y links or( connections'll attachedto a gate( operating rod or shaft12-which pro- Qjjec-ts upwardly above the pla-ne ot the turbine vany's'uitable distance 'for actuation and The'turbine casing 7 willalso have a draft tube attached thereto, as 13, and which is shown broken away in 4 the present instance. InFig. 1 the gate operating links` or connectionsl 11 are shown attached toV a gate operating ring 14 associated with the lower@ portions of the kgates for uniformly opening and closing the gates, as will be understood. Instead of associating -vthese' gate operating deviceswith the lower portions of the gates,y theymay be applied tothe top portionsof the gatesin the same ,manner and involve well knownr constructions. v The features thusfar described do @not of, themselves form part of theinvention, as they are commonly employed in certain other.v turbine installations but they are preferably used injcarrying out the vinvention. y

The invention'resides primarily in thel "swivelor mounting means for' the gates 1Q Aand consists; upper and lower hollow trunnions115 and 16,w'hi`ch as shown by and 2 are castintegral with the up- :per andlower ends of each gate and in alinef ment with'a' pin bore Yor seat 17 rextending vertically .throughthe gate. VThe gate and thetrunnions 15 and 16 may have the `bores therethrough :termed in any suitable 'l binedftension and compression member tov Adiameterthan a pin 18 vertically inserted through thetrunnions andthe bore 17 rand having nuts applied to upper and lower reduced,cxt-remities 19 thereof which seat respectively againstthe outer'sides of upper and lower bosses 2O and21, the shoulders on f the'lpiny adj acentit's reduced extremities vseatlingagainsty thev inner sides of the respective b'osses,`so Vthat each pin may act as a com- Y prevent .relative movement ofthe opposed another. The upper trunnion extends into a socket or seat 22 formed through the top plate 9 and continued into the boss 20, and the lower trunnion 1G likewise extends into a socket or seat 23 formed in the lower plate 8 above and in line with the boss 21. The sockets 22 and 23 are of greater diameter than the trunnions 15 and 16, respectively, extending thereinto, and between these trunnions and the side walls of the sockets, suitable metal bushings 24 are inserted. The trunnions 15 and 16 are of less length than their respective sockets 22 and 23, so that the'trunnions do not extend through either of the gate plates, and the ends of the trunnions are relieved from bearing on the end walls of the said sockets and leakage of water outwardly along the trunnions is avoided without requiring the use of stufling boxes. The bushings 24, however, extend the full length ot the sockets, or provide lin- 'ings for the latter which materially add t0 the strength and durability of the swivel mountings at the upper and lower ends of each gate and also operate to maintain the gates in true upright positions. The swivel mountings comprising essentially the trunnions 15 and 1Gat the opposite ends of each gate are enclosed and excluded from direct water contact, especially in view ot the hard grease lubrication hereinafter explained or do not depend upon water lubrication to ease the movement thereof, and moreover, it will be seen that the pin 18 is wholly enclosed and shielded from water contact and in the present instance serves merely to support the upper plate 9 from the lower. plate 8 and as a support on which the gate is permitted to freely operate during its openingr and closing adjustments. As a consequence, there is no wear on the pin 18 nor on the openings in the bosses 2() and 21 through which the opposite ends of the pin extend, and this particular mounting of the pin 18 also advantageously provides for maintenance of the gate in true ulnight position and insures accurate closure of the saine without the least liability of leakage, and moreover, the strain of the water pressure on the outer side of the gate is relieved from the pin and is imposed upon bearing clements or the trunnions 15 and 16 and the metal bushings 24, and hence, great resistance is given the gate to overcome any wear on the bearing parts incident to the water pressure on the outer side thereof. Moreover, there is no liability of the trunnions 15 and 16 adhering to tie pin 1S, particularly in view of the fact that both bearing organizations at the upper and lower end of each gate are thoroughly lubricated t-hrough the medium of a sup ly duct 25 extending diagonally through tie top portion of the boss normally connected to a gate" plates either Y towardA or from onegrease pressure device at 26. The duct loo opens into a space 27 above the upper end of the trunnion 15, and as the bore 17 for the pin 18 is of larger diameter than the pin, the lubricant is permitted to pass down around the pin through the said bore to a lower space 28 between the lower end or" the lower trunnion 16 and the end wall ot the lower. socket 23. The upper and lower eX- tremities oi the bore 17 are enlarged or liared, as at 29, to respectively give free ingress and egress of the lubricant to and from the bore 17. From the lower space 28 the lubricant is also adapted to pass outwardly through an upwardly inclined duct 30 to the gate ring 1li for conveniently lubricating the latter and rendering its operation easier by reducing the friction thereof. Each et the metal bushings 24 is held against rotation by a key pin 31 inserted therein, as clearlyshown in Fig. 2, and the interior of each bushing is `formed with communicating crossed lubricating grooves 32, as shown by Fig. 5, these grooves extending such distance vertically over the interior of the bushings as to be in part exposed, respectively, in the spaces 27 and 28 for taking up and distributing the lubricant around the trunnions 15 and 1G. rlhe preferred lubricant will be in the 'term ot grease, which is forced into the duct 25 and from the latter into the space 27 "and then works around the several parts oaento lubrication, as hereinbe'tore specified. It will he seen that by introducing lubricating material in the manner explained, the improved swivel mounting of the gate will permit a very easy operation ot the gate during its adjustment and the leakage of water into the improved bearing will be resisted.

Instead ot forming the trunnions 15 and 1G integral with the upper and lower ends ot the gate, the trunnion shown by Figs. 3 and l may be used, consisting of a tubular bearing member 33 `having a head flange 34 ot the form shown in Fig. 4: and flushly -fitted in a recess oii the saineshape and secured in place by screws or otheranalogous tastenings 36. This additional showing of the application oit the trunnions to the gate ends is intended to demonstrate that the same function may be obtained by torming the trunnions either integral with or separate from and secured to the gates.

rlhe metal bushings 2st may be renewed when found necessary and the general dimensions and proportions of the several parts may also be moditied at will, and in the itorm ot the device embodying separate trunnions 33 which are attached by the screws 36, these separable trunnions may be replaced at any time found necessary. Under ordinary wearing conditions, however, replacement of the separable trunnions or substitution et new gates having the itnegral trunnions 15 andl shown by Figs. 1 and 2` will be necessary only at very long intervals, in view of the :tact that the wear on the associated parts of each or" these swivel bearings is reduced to a minimum and all oit the parts are primarily of such dimensions as to compensate for anyunusual wearing contingencies. The improved swivel bearing for the gate embodying the features ot the present invention will also render the assemblage of the gates between the top and bottom plates reliably true, with superiority in operation and certainty in opening and closing movements, and other advantages hercinbefore specified.

Whatis claimed as new is:

1. The combination with a casing of a hydraulic turbine including lower and upper plates, ot a wicket gate having supporting trunnions projecting :trom the upper and lowerends thereof and rotatably seated in the lower and upper plates, the gate and trunnions having alined-bores therethrough, a pin loosely inserted through the gate and trunnion bores and fixed to the plates, and gate operating means connected to the gate independently of said trunnions.

`2. A hydraulic turbine casing comprising lower and upper plates, a wicket gate having upper and lower supporting trunnions rotatably seated in the plates, a pin loosely extending through the trunnions and gate and fixed at its opposite extremities tothe plates, and a. link connected to the outer end ot the gate tor operating it. i

3. A hydraulic turbine casing comprising upper and lower plates having sockets therein, a wicket gate having upper and lower trunnions movably extending into the said sockets, renewable bushings mounted in the sockets around the trunnions, and a pin loosely extending through the gate and trunnions and seating adjacent its opposite extremities against the plates to prevent relative movementvof said plates toward one another. i

4;. A hydraulic turbine casing comprising upper and lower plates having sockets therein, a wicket gate having upper and lower projecting trunnions rotatably extending into the sockets and of less length than the depth ot the sockets, and a pin loosely extending through the trunnions and the gate and fixed at opposite extremities to the plates to prevent relative movement of said plates either toward or trom one another.

5. A hydraulic turbine casing comprising lower and upper plates having sockets there in, a wicket gate having projecting trunnions at thevupper and lower ends thereof extending into the sockets, said trunnions being et less length than the depth ot the sockets, bushings fitted in the sockets and having the trunnions disposed therein, and a pin loosely extending through the trunmons and gate and having means adjacent yits opposite extremities abutting against of-the plates and means adjacent its opposite extremities abutting against the outer sides of thefplates, the bores of the gate and trunnions being greater in diameter than the diameter ofY theL pin.

'17. A hydraulic turbine casing comprising f lower and upper plates having sockets therein, wicket gates-disposed Vbetween the said plates and having lower and upper Vtrunmons-extending into the sockets, each gate and its trunnions having alined bores therethrough, and a pin loosely inserted through the bores'of each rgate-and itstrunnions and fixed' at opposite extremities to the said plates, the one socket ot each vgate mountingy being provided with a lubricantsupplyduct communicating therewith and the remaining socket fed with the lubricant through the boresv of each gate and its trunnions; it

` 8.'.'A hydraulic turbine casing comprising lower and upper plates having"socketsrtherein, the upper socketbeing provided with a lubricant supply duct, a wicket gate mounted between the plates and having upper and lower trunnions projecting and 'rotatable in the sockets and of less length vthan the depth of said sockets to form spaces above'and `below the respective trunniens, the trunnions and-gate having alined bores extending therethrough7 renewable bushings mounted in ,thev sockets vand enclosingk and engaged by the trunnions and having lubricating grooves at their inner sidesa'nd a pin extending through thebores of the `gate andftrunnions and xed at its opposite extremities tothe plates, the pin being of less diameter than the saidY bores to Y iermit therlubricant to pass from the space above the upper trunnions downwardly through thekb-ores to the space below the lower trunnion.- I 1 Y I9. A hydraulic turbine casing comprising lewer and upper plates having sockets thereinner in, the upper socket having a lubricant supply duct communicating therewith and the lower socket having a distributing lubricant duct extending outwardly therefrom, wicket gates mounted between the plates and each having upper and lower trunnions extending into the sockets, bushings mounted in the sockets around the trunnions and having lubricatingr grooves, spaces being formed in the sockets above the upper truunion and below the lower trunuion with which the supply duct and distributing duct respectively communicate, a pin passing loosely through each gate and its trunnions, each gate and its trunnions having alined bores of greater diameter than the pin passing therethrough to serve as communicating means between the upper and lower passages tor movement ot the lubricant from the one passage to the other and also to permit each gate to be rotated without engaging its pin, and a gate operating ring counected to the gates and lubricated through the medium of' the distributing ducts which extend thereto.

l0. A hydraulic turbine comprising opposed gate plates, a wicket gate disposed between said plates and having trunnions projecting from its ends and bearing in the respective plates, the gate and trunnions having alined bores theretln-ough, and a combined tension and compression member extending through the gate and trunnions and having means thereon almtting against the inner and outer sides of said plates.

1l. A hydraulic turbine easing having opposed gate plates, a wicket gate having trunnions at opposite ends movably extending into sockets in said plates and terminating wit-hin said sockets, and a pin loosely extending through the trunnions and gate and sockets and securedto said plates and enclosed and shielded f rom water contact.

l2. A hydraulic turbine casing having opposed'members, a wicket gate having end bearing devices projecting into said members` and a pin supporting the one member in relation to the other against movement in a direction either towardl or from it and loosely passing through and enclosed by the gate and its bearing devices.

In testimony whereof I have hereunto set my hand.

DANIEL C. DE V INE. 

